WIP threadasm.S

Author: liushuyu

runtime/druntime/src/core/threadasm.S

@@ -744,58 +744,61 @@ fiber_switchContext:
     .cfi_offset 14, -48
     .cfi_offset 15, -40
     lgr     %r1, %r15
-    aghi    %r15, -64
+    aghi    %r15, -224
     /* we need to tell the debugger that the current stack offset is:
-       64 (frame size) + 160 (parameter area size) */
-    .cfi_def_cfa_offset 224
+       64 (frame size, for storing f8 ~ f15) + 160 (temp parameter area size) + 160 (last parameter area size) */
+    .cfi_def_cfa_offset 384
     /* store the (optional) backchain data */
-    stg     %r1, 0(%r15)
+    stg     %r1, 64(%r15)
     /* Save callee-saved floating point registers
        s390x ABI has a very unique way for storing fp registers:
        even-pairs first and odd-pairs last */
     std     %f8,  0(%r15)
-    .cfi_offset 24, -224
+    .cfi_offset 24, -384
     std     %f10, 8(%r15)
-    .cfi_offset 25, -216
+    .cfi_offset 25, -376
     std     %f12, 16(%r15)
-    .cfi_offset 26, -208
+    .cfi_offset 26, -368
     std     %f14, 24(%r15)
-    .cfi_offset 27, -200
+    .cfi_offset 27, -360
     std     %f9,  32(%r15)
-    .cfi_offset 28, -192
+    .cfi_offset 28, -352
     std     %f11, 40(%r15)
-    .cfi_offset 29, -184
+    .cfi_offset 29, -344
     std     %f13, 48(%r15)
-    .cfi_offset 30, -176
+    .cfi_offset 30, -336
     std     %f15, 56(%r15)
-    .cfi_offset 31, -168
+    .cfi_offset 31, -328
 
     /* Save stack pointer, the stack pointer is adjusted so that
        GC won't see the float point registers */
-    stg     %r15, 0(%r2)
+    la       %r1, 64(%r15)
+    stg      %r1, 0(%r2)
 
     /* Load the new context pointer as stack pointer.  */
     lgr     %r15, %r3
-    .cfi_def_cfa_offset 224
+    .cfi_def_cfa_offset 320
+    aghi    %r15, -64
+    .cfi_def_cfa_offset 384
 
     /* Restore call-saved floating point registers.  */
     ld      %f8,  0(%r15)
-    .cfi_offset 24, -224
+    .cfi_offset 24, -384
     ld      %f10, 8(%r15)
-    .cfi_offset 25, -216
+    .cfi_offset 25, -376
     ld      %f12, 16(%r15)
-    .cfi_offset 26, -208
+    .cfi_offset 26, -368
     ld      %f14, 24(%r15)
-    .cfi_offset 27, -200
+    .cfi_offset 27, -360
     ld      %f9,  32(%r15)
-    .cfi_offset 28, -192
+    .cfi_offset 28, -352
     ld      %f11, 40(%r15)
-    .cfi_offset 29, -184
+    .cfi_offset 29, -344
     ld      %f13, 48(%r15)
-    .cfi_offset 30, -176
+    .cfi_offset 30, -336
     ld      %f15, 56(%r15)
-    .cfi_offset 31, -168
-    lmg     %r6, %r14, 112(%r15)
+    .cfi_offset 31, -328
+    lmg     %r6, %r14, 272(%r15)
     .cfi_offset 6, -112
     .cfi_offset 7, -104
     .cfi_offset 8, -96